I am having problems with the scoring on my Williams Oasis ball bowler. I purchased the schematic and I have traced out all the things it is trying to tell me and nothing seams to work (I'm really not too good at reading these). During the frame after a strike or spare the machine starts scoring and just doesn't stop it just keeps adding points until I manually trip the strike spare reset relay, then it stops scoring and the reset bank resets and the game continues until I have a strike or spare and it goes back to not wanting to stop scoring. The odd thing is when I play any of the other games (flash, pyramid, dual flash, strikes 90) it plays perfectly, it's only on regulation.... I have reflowed the solder joints on almost all the coils (they all ohm out ok, and also all the switches on the reset bank. I'm at a loss and have to clue where to turn next. It seams like it's a timing issue, but the score motor shaft has a locating flat on both sides so I'm sure that the wiper fingers and cam are in the correct place.Like I said I'm about ready to move on I've spent too many hours checking and rechecking wires, switches and steppers..(I guess that's why I call it a hobby....If I had to make a living at this I'd starve!!!).... Also the schematic doesn't show any diagrams of the score motor so I have no clue which set of switches on the cam are.
Any thoughts would be appreciated.
Thanks,
Bill

Thank you for the reply I really appreciate it! My machine is a 1965 model and the controls are mounted on the back door not under the bed. I do not have a "all pins down relay" But it does have 3 separate 1 - 10 no coil relays located in the long relay bank. Are these the same as the all pins down relay? I've been through all these switches and they all seam to operate correctly but I will go through them again. My biggest fear is someone before me moved some wires or I have a broken wire somewhere causing this. Again thank you for the help!

Yes I did go through the switches under the hood for all the pins. I hope these are the pictures you are wanting to see. I think the 1-10 no coil switches drop down when all the pins trip (strike / spare) then when the bank resets they are reset. All the steppers are nice and clean and free. I've done quite a few pinballs and use the systematic method of cleaning all the steppers, switches, score reels,,,,,,, and I've never had this much problems. Maybe I should have stuck to the pins

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I will take some more pictures tonight and......... yes............ "after a strike or spare, score is added correctly, next frame is setup, and after next shot, things go hay wire?" ...................................Everything is OK in the strike or spare frame

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Sorry the transformer didn't help. When I read you post I thought that makes sense I never checked it because I read somewhere that it's rare that they fail. I'm still wondering if someone before me didn't move a wire or a few wires or have a broken wire that is not visible. That's where I got frustrated because I don't have a clue how to trace them even with the schematic. As you can see I did re flow the solder joints thinking there was a cold joint . I did that one at a time being careful not to move them. Keep at it you'll figure it out and it will be worth it in the end.

No I didn't find a broken finger not to say that it could have broken a long time ago. I hope somebody has a picture for you. You might try asking Mickey for a picture.

Great news I'm sure you will enjoy it for a long time!!